Souk Lahad ( ') is an oasis town and commune in the Kébili Governorate, Tunisia, about 15 kilometers northwest of the town of Kébili.
It is located in the Nefzaoua region on the road from Kébili to Tozeur, just east of the point where the road begins its traversal of the Chott el-Jerid. It is the administrative seat of a delegation of the same name.
As of 2004 Soul Lahad had a population of 18,285.
As suggested by its nameâÂÂsà «q al-aḥad means "Sunday market" in ArabicâÂÂthe town developed as an agricultural community before light industry was introduced, as well as some tourism, with a luxury hotel.